Answer: (1+2a)^2 or (1+2a)(1+2a)
Step-by-step explanation:
The cotangent function is defined as the ratio between cosine and sine of a given angle, i.e.

Since you can't have zero at the denominator, the cotangent function is not defined when the sine is zero.
Let's look at your option:
, so the cotangent is defined here
, so the cotangent is not defined here
, so the cotangent is defined here
, so the cotangent is defined here
The gaps in the area needs to be closed so the data you use is lenient
Answer:The answer is x = -203.
Step-by-step explanation:
1. reduce brackets
2. reduce 10 - 523 to -513
3. reduce -513 x -2 to 1026
4. subtract 1026 from both sides
5. reduce 823 - 1026 to -203
Answer:
160+4h=70+7k
Step-by-step explanation:
h(160))
k(70)
4h=7k